Waste guard



May 9, 1944. J. NlMvMo 2,348,562

WASTE` GUARD Filed Nov. s, 194s IMI nlmn l ATTORNEYS Patented May 9, 1944 UNITED sTArss PATENT OFFICE WASTE GUARD John Nimmo, Norwich, Conn.

.Application November 3, 1943, Serial No.v 508,825

3 Claims.

This invention relates to textile spindles upon which bobbins are mounted for the packaging of yarn.

Inthe use of either lling or warpbobbins on a spindle it frequently occurs that yarn collects on the spindle at the point Where the bobbin usually grips the spindle to be driven thereby. The bobbin in such cases is lifted from its desired position on the spindle and near the lower end of the package the yarn will wind down along the base of the bobbin and frequently additional yarn will collect on the spindle. The operator in dofng the bobbin will break the yarn loose from the spindle and put on another bobbin Without removing the collection of yarn on the spindle. This will cause this next bobbin to ride up higher and the same will repeat itself thus resulting in poorly formed packages which require later correction and a waste of a large amount of yarn which has accumulated.

One ofthe objects of this invention is to provide an arrangement to prevent a collection of waste yarn collecting on the spindle and thus creating the trouble.

Another object of this invention is to prevent poorly formed packages.

Another object of this invention is to provide a guard which will t loosely about the bobbin and not touch the same to prevent the collection of yarn on the spindle.

Another object of this invention is to provide a collar or guard which will maintain its dynamic balance so as not to interfere with the high speed of the spindle.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawing:

Fig. l is an elevation of a spindle mounted in its bolster and shown supported in a rail which is sectioned, the package being formed on the bobbin;

Fig. 2 is a sectional view through the bobbin and showing the guard in section at the lower end thereof;

Fig. 3 is a section on line 3-3 of Fig. 2;

Fig. 4 is a section on line 4-4 of Fig. 2;

Fig. 5 is a perspective View of the guard or collar which I utilize in the forming of the advantageous objects above-mentioned;

Fig. 6 illustrates a perfectly formed base of a package and at either side thereof poorly formed packages which result from an accumulation of yarn upon the spindles.

In proceeding with this invention, I provide a collar or guard which will be formed of a diameter to snugly fit a portion of the spindle and be driven thereby while the other portion will be cfa size to receive the lower end of the bobbin as it is positioned correctly upon the spindle. This guard or collar will extend to a height just below the rings which are provided for mounting the bobbin in a shuttle.

With reference to the drawing II! designates a rail upon which a bolster case II is mounted` and secured in position by the nut I2. The spindle blade is provided with a whirl I3 above which the spindle is turned down in a seriesof reduced portions, there being a portion I4 adjacent thev whirl, a tapered portion I5 which serves as a gripping surface for the bobbin and a smaller portion I6 extending upwardly therefrom.

The bobbin is designated generally I'I and may be either a lling or warp bobbin. The bobbin is provided with a bore I8 having an enlarged portion I9 at its lower end thereof which is tapered substantially along and to the same degree as the taper I5 providing a shoulder 20 between these bores. Rings 2l are provided along the base of the bobbin for mounting the bobbin in a shuttle. The bore I9 of the bobbin I1 snugly lts along the tapered surface I5 so as to drive the same. The spindle is rotated by the whirl I3 in a usual manner by a cord in the particular instance shown.

In order to prevent yarn which is packaged upon the bobbin as shown at 23, see Fig. 1, from accumulating on the spindle along the portion I5, or along any portion which may work up to the portion I5, as indicated at 32 and 35 in Fig. 6, I have provided a guard or collar member designated generally 24 and shown in perspective in Fig. 5. This collar consists of a cylindrical portion designated 2B and a smaller cylindrical portion designated 21 which is split at opposite sides at 28 causing the same to be somewhat resilient. A suitable means for connecting these two portions as at 29 is provided, the same consisting of an outwardly extending portion as shown in the drawing. The portion 21 is formed of a size to t the portion I4 of the spindle sufficiently snug to cause the guard or collar to rotate with the spindle. The portion 26 of this guard is suciently large to fit about but out of contact with the bobbin when it is mounted in position. The height of my guard above the whirl I3 is such that it does not reach to the rings 2|. In this manner the guard in no way interferes with mounting of the bobbin on the spindle. The bobbin is free to be mounted under all circumstances to have a driving engagement with the spindle completely independent of the guard.

The guard, however, does extend along the lower portion of the bobbin and extends below the end of the bobbin to a sufficient extent so that any yarn which may be wound irregularly out of its correct position on its package will be collected by the guard and thus prevent the yarn from getting onto'the spindle where it may effect the mounting of the bobbin in position.

This guard may be easily withdrawn from the spindle if desired to remove any yarn which may have collected. A simple upward motion while engaging the flanged portion 29 will serve to accomplish removal when the bobbin is removed or it may be removed with the bobbin.

In Fig. 6 I have illustrated at 30 a, package formed on the bobbin which is correctly seated in position on the spindle even though the guard which I provide herein has not been utilized. In the figure at the right designated 3l in Fig. 6, some waste 32 has collected on the spindle. Consequently the bobbin is in a somewhat raised position and the formation of the package as at 33 is improper and some of the yarn may collect on the base of the bobbin. At 34 in Fig. 6 I have shown a more aggravated condition where a greater amount of waste 35 is collected and in this case the bobbin has been raised to a still higher position and the lower end of the package is malformed. By the use of the guard which I have described and which is the subject of this invention, this accumulation of yarn as at 32 or 35 as waste upon the spindle to prevent the bobbin from properly seating is eliminated and in each case the bobbin may properly seat in position upon a spindle where it is designed to go.

I claim:

1. In combination a spindle having a bobbin engaging surface, a bobbin having a bore to receive said spindle with a portion thereof to engage and fit said surface to provide a driving connection therewith and a collar to extend about said spindle at a position below said bobbin to prevent yarn as wound on the bobbin from winding and collecting on the spindle, said collar having a resilient portion of a diameter to frictionally engage said spindle and rotate therewith.

2. In combination a spindle having a bobbin engaging surface, a bobbin having a bore to receive said spindle with a portion thereof to engage and t said surface to provide a driving connection therewith and a collar to extend about said spindle and along the lower portion of the surface of the bobbin to prevent yarn as wound on the bobbin from winding and collecting on the spindle, said collar having a resilient split portion of a diameter to frictionally engage said spindle and rotate therewith.

3. In combination with a spindle having a bobbin thereon which is driven solely by its internal bore engaging the spindle, a whorl for driving the spindle and guard means located between the whorl and bobbin and extending above and spaced circumferentially from the bottom of the bobbin.

JOHN NIMMO. 

